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Hemicidaroida ✝
Source Data |
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Rank | order (PBDB) | |||||||||||||||||||||||||||||||||||||||||||||
Taxonomy (PBDB) | Life : Animalia : Echinodermata : Echinoidea : Hemicidaroida | |||||||||||||||||||||||||||||||||||||||||||||
Classification (PBDB,GBIF) |
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Opinions (PBDB) |
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Status (PBDB) | extinct | |||||||||||||||||||||||||||||||||||||||||||||
Taxon Size (PBDB) | 6 | |||||||||||||||||||||||||||||||||||||||||||||
First Recorded Appearance | 129 - 125 Ma Early/Lower Cretaceous | |||||||||||||||||||||||||||||||||||||||||||||
Last Recorded Appearance | 93.5 - 89.3 Ma Late/Upper Cretaceous | |||||||||||||||||||||||||||||||||||||||||||||
Environment | marine (based on Hemicidaroida) | |||||||||||||||||||||||||||||||||||||||||||||
Motility | slow-moving (based on Hemicidaroida) | |||||||||||||||||||||||||||||||||||||||||||||
Vision | limited (based on Echinoidea) | |||||||||||||||||||||||||||||||||||||||||||||
Diet | grazer (based on Hemicidaroida) | |||||||||||||||||||||||||||||||||||||||||||||
Reproduction | dispersal=water,planktonic (based on Hemicidaroida) | |||||||||||||||||||||||||||||||||||||||||||||
Ontogeny | accretion,addition of parts (based on Echinodermata) | |||||||||||||||||||||||||||||||||||||||||||||
Taphonomy | high Mg calcite (based on Hemicidaroida) | |||||||||||||||||||||||||||||||||||||||||||||
Primary Reference (PBDB) | K. Beurlen. 1937. Revision der Seeigel aus dem nord- westdeutschen Jura, II Teil, Die regularen Seeigel. Abhandlungen der Preussischen Geologischen Landesanstalt 174:1-149 |
Fossil Distribution
Subtaxa
Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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Allomma ✝ genus | accepted (GBIF) listed (PBDB) | 5 | 129 Ma Early/Lower Cretaceous | 99.6 Ma Late/Upper Cretaceous | |
Colpotiara ✝ genus | accepted (GBIF) listed (PBDB) | ||||
Micropedina ✝ genus | accepted (GBIF) listed (PBDB) | 20 | 101 Ma Late/Upper Cretaceous | 93.5 Ma Late/Upper Cretaceous | |
Trochodiadema ✝ genus | accepted (GBIF) listed (PBDB) | 3 | 125 Ma Early/Lower Cretaceous | 101 Ma Late/Upper Cretaceous |
Synonymy List
Year | Name and Author |
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1957 | Hemicidaroida Durham and Melville p. 254 |
1966 | Hemicidaroida Fell and Pawson p. U381 |
1991 | Hemicidaroida Smith p. 22 |
2002 | Hemicidaroida Sepkoski, Jr. |
2003 | Hemicidaroidea Berndt p. 78 |
References
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!